I just wanted to throw my $.02 in. I think it's ok to use and give up feats in order to have increased spellcasting abilities while multiclassing.
Talented Spellcaster
Prerequisite: Ability to cast spells
Benefit: Upon selecting this feat, choose one of your classes that allows you to cast spells. Half the sum of all your other class levels, rounded down, is added to the selected class for purposes determining spells known, caster level, and spells per day(and whatever else I can't remember right now).
Special: You lose the benefit of this feat if you gain more levels in a class that is not the class you chose with this feat. Prestige classes do not count towards this limitation. You can only take this feat once.
Supplemental Spellcasting:
Prerequisite: Ability to cast spells
Benefit: Upon selecting this feat, choose one of your classes that allows you to cast spells. One-third of the sum of all your other class levels, rounded down, is added to the selected class for purposes determining spells known, caster level, and spells per day.
Special: You lose the benefit of this feat if you gain more class levels in the selected class than any other single class you have levels in. You can take this feat multiple times. Each time you take this feat, apply it to a different class.
Wayfarer's Weapon Style
Prerequisites: Base attack bonus +1
Benefit: You gain a +1 bonus on your BAB for each class you have levels in that does not grant a full BAB. For example, Lothro is a Wizard2/Rogue1/Fighter4. His BAB is +5. Lothro takes this feat and is granted an additional +2 BAB, giving him a +7 BAB for having levels in wizard and rogue, which do not grant a full BAB. You cannot gain a BAB bonus higher than your total class levels, and Prestige classes do not count for determining bonuses gained from this feat.
I know some people voiced that they don't feel that giving up feats is fair, but I feel it's okay, as you have to give a little to get a little. I know that what I posted has quite possibly been discussed, and the intellectual scope of this thread has gone beyond what I can keep up with. So just take it for what it's worth!
